Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE34485 | Power transmission toothed belt and drive | Hiroyuki Tanaka, Kuniharu Uto, Kazumi Kawai, Motonobu Yasuhuku | 1993-12-21 |
| 4929221 | Power transmission toothed belt and drive | Hiroyuki Tanaka, Kuniharu Uto, Kazumi Kawai, Motonobu Yasuhuku | 1990-05-29 |
| 4915674 | Toothed drive belt | Hiroyuki Tanaka, Hideo Hirai, Kazumi Kawai | 1990-04-10 |